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Finding the Fourth Proportional to 485,373.42, 728,388.12 and 169,833.06

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Solution

The fourth proportional to 485,373.42, 728,388.12 and 169,833.06 is: 254,864.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,373.42 : 728,388.12 = 169,833.06 : x
  2. Step 2: Convert to fraction form
    485,373.42/728,388.12 = 169,833.06/x
  3. Step 3: Cross multiply
    485,373.42x = 728,388.12 × 169,833.06
  4. Step 4: Simplify right side
    485,373.42x = 123,704,383,287.25
  5. Step 5: Solve for x
    x = 123,704,383,287.25/485,373.42
  6. Step 6: Final answer
    x = 254,864.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.